See also:

Activating HDC
Press the button; the LED above the button lights up. ...

DTMF suffix dialing
DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purpose. ...

BMW Info
General information Messages from BMW regarding service actions and news from BMW. Selecting additional functions The following functions are available when a message is selected: ...